| 摘要 |
PURPOSE:To allow imaging of the state near a joint part by dispersing a material contg. elements having a large coefft. of thermal neutron absorption constituting the intermediate layer of the joint part uniformly into a material contg. elements having a small coefft. of thermal neutron absorption. CONSTITUTION:A ceramics member and a ceramics member or the ceramics member and a metallic member are joined via the intermediate layer. This intermediate layer consists of >=2 constituting materials including the material contg. the elements having the small coefft. of thermal neutron absorption and the material contg. the elements having the large coefft. of thermal neutron absorption. In addition, the material contg. the elements having the large coefft. of thermal neutron absorption is dispersed uniformly into the material contg. the elements having the small coefft. of thermal neutron absorption. The non-destructive inspection method for the joined ceramics body having such constitution is executed by irradiating the joint part with the thermal neutron rays, imaging the distribution of the elements having the large coefft. of thermal neutron absorption from the intensity of the transmitted neutron rays and deciding the joint state. The detection of whether the joint body is defective or non-defective and the decision of the joint strength thereof are exactly and easily executed in this way. |
